3D printing consumable box with heating and drying functions
By integrating the drying device with the extrusion mechanism and adopting a sliding structure of heating drying components and photoelectric detection devices, the problems of material reabsorption of water and misjudgment during transmission are solved, thus improving the accuracy and stability of 3D printing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-17
AI Technical Summary
In existing 3D printing technologies, the separation of the drying device from the extruder causes the filament to absorb water again during transport, affecting print quality. Furthermore, photoelectric detection devices cannot accurately distinguish between normal filament feeding and retraction, resulting in a high misjudgment rate and impacting print stability.
The drying unit is integrated with the extrusion mechanism, and drying is carried out using a heated drying component and a circulating fan. Combined with the up-and-down sliding structure of the photoelectric detection device, false judgments are eliminated by the sliding of the photoelectric detection device.
It achieves effective drying of consumables, reduces moisture absorption, improves printing accuracy and stability, reduces misjudgment rate, and enhances print quality.
Smart Images
Figure CN223999004U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of 3D printers, and in particular to a 3D printing consumable box with a heating and drying function. Background Technology
[0002] 3D printing technology emerged in the mid-1990s and, after more than 20 years of development, has been applied to various fields such as aerospace, construction, medicine, and electronics. Currently, with the increasingly widespread use of 3D printing, more and more materials are being developed for printing, and the requirements for the precision of printed parts are becoming increasingly stringent. Many commonly used materials, such as PA and PLA, which are highly absorbent, will absorb a lot of moisture when exposed to air for extended periods, causing air bubbles in the printed material and significantly impacting the precision and mechanical properties of the printed parts. In existing technologies, the drying device is separated from the extruder, causing the filament to absorb water again during transport, affecting print quality. Furthermore, in existing technologies, the photoelectric detection device is fixedly installed and cannot distinguish between normal filament feeding and retraction. For example, when the nozzle is clogged, the extruder continues to perform a retraction-feed cycle, causing the detection device to continuously misinterpret it as normal filament movement, with a misjudgment rate as high as 85%, severely affecting printing stability. Therefore, a 3D printing filament box with heating and drying functions, extrusion functions, and reasonable fault detection capabilities is needed. Summary of the Invention
[0003] This invention addresses the shortcomings of existing technologies by providing a 3D printing consumable box with a heating and drying function.
[0004] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:
[0005] A 3D printing filament box with heating and drying function includes a filament tray shell, in which a filament tray wound into a disc shape is placed. The filament tray shell includes an upper shell and a lower shell that are hinged to each other, and also includes an extruder installed at the front opening of the upper shell and the lower shell. The extruder cooperates with the filament and pulls the filament to move for printing. A heating and drying component is also installed in the lower shell.
[0006] Preferably, the heating and drying assembly includes a heating element and a circulating fan, with the heating element located below the material tray and the circulating fan located below the heating element.
[0007] Preferably, the heating element includes a horizontal plate and inclined plates located at both ends of the horizontal plate. The two inclined plates are inclined upwards near the material tray, and the angle between the inclined plates and the horizontal plane is 50°~70°. A heating film and a thermistor are installed on the horizontal plate and the inclined plates.
[0008] Preferably, the inclined plate is provided with an air outlet, and the circulating fan is located at the front end inside the material tray shell and is set to blow air upwards.
[0009] Preferably, the lower housing is equipped with a support shaft for supporting printing consumables; there are two support shafts, which are located below the material tray, and the distance between the two support shafts is smaller than the diameter of the material tray. When the material tray rotates, the support shafts can provide support for it.
[0010] Preferably, it also includes a front cover that snaps onto the front side of the lower housing, with the extruder installed inside the front cover.
[0011] Preferably, the device also includes a bracket installed on the material tray shell. The bracket is fixed to the front side of the lower shell and extends upward. When the upper shell and the lower shell are fastened together, the bracket is wrapped by the upper shell. The bracket is located above the extruder. The bracket is provided with a chute arranged along the material movement direction. A guide head and a photoelectric detection device that can move along the chute are installed on the chute.
[0012] The slide groove on the bracket is set along the feeding direction of the consumables. The photoelectric detection device is installed below the slide groove. When the consumables are fed normally, the consumables drive the grating wheel inside the photoelectric detection device to rotate and trigger a pulse signal. When the consumables are pulled back upwards, the photoelectric detection device slides upwards synchronously with the consumables due to friction. There is no relative movement between the consumables and the consumables, and the pulse signal is interrupted.
[0013] This utility model has significant technical effects due to the adoption of the above technical solutions: This application integrates the drying chamber with the extrusion mechanism, eliminating intermediate conveying links and making the entire transmission method more reasonable; in addition, the up-and-down sliding structure of the photoelectric detection device can eliminate misjudgment caused by the back-pulling of consumables during the printing process. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model. Figure I .
[0015] Figure 2 This is a schematic diagram of the structure of this utility model. Figure II .
[0016] Figure 3 This is a partial enlarged view of the present invention.
[0017] Figure 4 This is a cross-sectional view of the present invention.
[0018] The parts referred to by the numbers in the attached diagram are as follows: 1—material tray shell, 2—consumable material tray, 3—extruder, 4—heating and drying assembly, 5—support shaft, 6—material guide head, 7—photoelectric detection device, 11—upper shell, 12—lower shell, 13—front cover, 14—support, 141—slide groove, 41—heating plate, 411—horizontal plate, 412—sloping plate, 42—circulating fan. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example 1
[0020] A 3D printing filament box with heating and drying function, as shown in the figure, includes a filament tray shell 1, in which a filament tray 2 wound into a disc shape is placed. The filament tray shell 1 includes an upper shell 11 and a lower shell 12 that are hinged to each other, and also includes an extruder 3 installed at the front opening end of the lower shell 12. The extruder 3 cooperates with the filament and pulls the filament to move for printing. A heating and drying assembly 4 is also installed inside the lower shell 12.
[0021] The heating and drying assembly 4 includes a heating element 41 and a circulating fan 42. The heating element 41 is located below the material tray 2, and the circulating fan 42 is located below the heating element 41. Example 2
[0022] Similar to Example 1, except that the heating element 41 includes a horizontal plate 411 and inclined plates 412 located at both ends of the horizontal plate 411. The two inclined plates 412 are inclined upward near the material tray 2, and the angle between the inclined plates 412 and the horizontal plane is 60°. A heating film and a thermistor are installed on the horizontal plate 411 and the inclined plates 412. The heating film has a power of 50~100W. The temperature is monitored in real time by the thermistor and fed back to the controller. Example 3
[0023] Similar to Embodiment 1, except that the inclined plate 412 is provided with an air outlet, and the circulating fan 42 is located at the front end inside the material tray shell 1 and blows air upwards. The circulating fan 42 draws air towards the heating element 41 and forms an annular airflow along the inner wall structure of the material tray shell 1, which works with the heating element 41 to achieve the purpose of drying and heating. Example 4
[0024] Similar to Embodiment 1, except that a support shaft 5 for supporting printing consumables is installed inside the lower housing 12; there are two support shafts 5, which are located below the material tray 2 respectively, and the distance between the two support shafts 5 is smaller than the diameter of the material tray 2. When the material tray 2 rotates, the support shafts 5 can provide support for it. Example 5
[0025] Similar to Embodiment 1, except that it also includes a front cover 13 snapped onto the front side of the lower housing 12, and the extruder 3 is installed inside the front cover 13.
[0026] It also includes a bracket 14 installed on the material tray shell 1. The bracket 14 is fixed to the front side of the lower shell 12 and extends upward. When the upper shell 11 and the lower shell 12 are fastened together, the bracket 14 is wrapped by the upper shell 11. The bracket 14 is located above the extruder 3. The bracket 14 is provided with a slide groove 141 arranged along the material moving direction. A guide head 6 and a photoelectric detection device 7 that can move along the slide groove 141 are installed on the slide groove 141. Example 6
[0027] The slide groove 141 of the bracket 14 is the consumable feeding direction, the guide head 6 is fixed on the top of the photoelectric detection device 7, and the photoelectric detection device 7 is installed below the slide groove 141.
[0028] The slide groove 141 on the bracket is set along the feeding direction of the consumable. The photoelectric detection device 7 is installed below the slide groove 141. When the consumable is fed normally, the consumable drives the internal grating wheel of the photoelectric detection device 7 to rotate and trigger a pulse signal. When the consumable is pulled back upward, the photoelectric detection device 7 slides upward synchronously with the consumable due to friction, and there is no relative movement between them, so the pulse signal is interrupted.
[0029] Work logic:
[0030] Normal printing: The photoelectric detection device 7 is located below the chute 141. The extruder 3 pushes the consumable downwards, and the consumable drives the grating wheel inside the photoelectric detection device 7, triggering a pulse signal.
[0031] Retraction action: When the extruder 3 retracts, the consumable briefly retracts upward, and the photoelectric detection device 7 and the consumable slide upward synchronously due to friction. At this time, there is no relative movement between the consumable and the photoelectric detection device 7, the internal grating wheel does not rotate, and the pulse signal is interrupted.
[0032] Nozzle blockage: If the consumable cannot be extruded normally after retraction, and the photoelectric detection device 7 continuously has no pulse signal, the system determines that the nozzle is blocked and alarms.
[0033] During the 3D printing process, the filament not only undergoes extrusion but also retraction. The photoelectric detection device 7 works by using the movement of the filament to drive the grating wheel inside the encoder switch. A photoelectric switch located on the grating wheel generates a pulse signal when the grating rotates, thus allowing the photoelectric detection device 7 to detect whether the filament is moving.
[0034] Printers typically determine the proper movement of the filament during printing by controlling the extruder 3 to extrude approximately 2mm of filament. If the photoelectric detection device 7 generates a pulse signal at this point, it indicates normal filament movement. However, printed parts generally do not have a chute 141 structure. This can lead to misjudgments in the following situation: When the printed part requires frequent retraction during the printing of a model, if the print head is clogged and the filament cannot be extruded, and assuming the retraction setting is 1mm, the actual movement of the filament is frequent retraction and extrusion of 1mm, not normal model printing. However, the photoelectric detection device 7 continues to generate pulse signals, failing to detect the fault.
[0035] With the addition of the slide groove 141 structure in this application, when the printer retracts, the photoelectric detection device 7 will slide along with the consumable due to the frictional force between it and the consumable, without moving relative to the consumable. Therefore, when the consumable cannot be extruded, there will be no relative movement between the consumable and the photoelectric detection device 7, and the detection switch will not generate a pulse signal, allowing the printer to detect the fault.
[0036] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.
Claims
1. A 3D printing consumable box with a heating drying function, comprising a tray shell (1), characterized in that: The material disc shell (1) is used for placing the material disc (2) wound into a disc type, the material disc shell (1) comprises an upper shell (11) and a lower shell (12) hingedly connected with each other, and further comprises an extruder (3) installed at the opening end of the front side of the lower shell (12), and a heating and drying assembly (4) is further installed in the lower shell (12). 2.The 3D printing consumable box with a heating and drying function according to claim 1, wherein: The heating and drying assembly (4) comprises heating fins (41) and a circulating fan (42), the heating fins (41) are located below the material disc (2), and the circulating fan (42) is located below the heating fins (41).
3. The 3D printing consumable box with a heating and drying function according to claim 2, characterized in that: The heating fins (41) comprise a horizontal plate (411) and inclined plates (412) located at both ends of the horizontal plate (411), the angle between the inclined plates (412) and the horizontal plane is 50°-70°, and the two inclined plates (412) are arranged to be inclined upward close to the material disc (2); the horizontal plate (411) and the inclined plates (412) are provided with heating films and thermistors.
4. The 3D printing consumable box with a heating and drying function according to claim 2, characterized in that: The inclined plates (412) are provided with air outlets, and the circulating fan (42) is located at the front end inside the material disc shell (1) and is arranged to blow air upward. 5.The 3D printing consumable box with a heating and drying function of claim 1, wherein: The lower shell (12) is provided with support shafts (5) for supporting the printing material; the support shafts (5) are two, the support shafts (5) are respectively located below the material disc (2), and the distance between the two support shafts (5) is less than the diameter of the material disc (2). 6.The 3D printing consumable box with a heating and drying function of claim 1, wherein: The front cover (13) is buckled to the front side of the lower shell (12), and the extruder (3) is installed in the front cover (13). 7.The 3D printing consumable cartridge with a heating and drying function of claim 1, wherein: The bracket (14) is installed on the material disc shell (1), the bracket (14) is located above the extruder (3), the bracket (14) is provided with a sliding groove (141), the photoelectric detection device (7) is installed on the sliding groove (141) and can move along the sliding groove (141), and the guide head (6) is installed above the photoelectric detection device (7). 8.The 3D printing consumable cartridge with a heating and drying function of claim 7, wherein: The sliding groove (141) on the bracket (14) is arranged along the feeding direction of the material, the photoelectric detection device (7) is installed below the sliding groove (141), when the material is normally fed, the material drives the grating wheel in the photoelectric detection device (7) to rotate and triggers a pulse signal; when the material is retracted upward, the photoelectric detection device (7) slides upward synchronously with the material due to the friction force, and there is no relative motion between the photoelectric detection device (7) and the material, and the pulse signal is interrupted.